Anterior view of head, adult worker. Posterior head margin weakly concave. Photo by April Nobile, Antweb.org, modified.
Anterior view of head, adult worker. The posterior margin of the head is distinctly convex. Used in Antkey to separate Plagiolepis alluaudi and Plagiolepis pygmaea from Plagiolepis exigua.
Lateral view of head, adult worker. There are no pigmented ommatidia visible on the head. If a facet is visible, it not distinctly pigmented.andnbsp;Used in Antkey to separateandnbsp;Stigmatomma zwaluwenburgi, Prionopelta antillana, Cerapachys biroi and Hypoponera zwaluwenburgi from all other species.
Close-up view of clypeus, adult worker. Anterior margin of clypeus armed with a row of small denticles.
Lateral view of petiole, adult worker. Petiole broadly attached to gaster and lacking a posterior face.
Lateral view of petiole, adult worker. The subpetiolar processandnbsp;broad and with fenestra present.
Breaking open a hollow twig in the Florida scrub reveals a nest of the twig ant. Photo by ©Alexander L. Wild, alexanderwild.com
Lateral view of waist, adult worker. Waist with two segments. Photo by April Nobile, Antweb.org, modified.
Anterior view of eye / ocellus, adult worker. Eye size unusually large (about half head length). Photo by April Nobile, Antweb.org, modified.
Close-up view of mandibles, adult worker. Mandibles with five teeth and denticles. Used in Antkey to separate Pachycondyla stigma from Pachycondyla chinensis and Hypoponera species.
Close-up view of tibia, adult worker. Tibia with both a large pectinate spur and a smaller simple spur.
Major workers of the tropical fire ant are recognizeable for their unusually blocky heads. Photo by ©Alexander L. Wild, alexanderwild.com
Authors: Sarnat and Suarez
Migrated to idtools.org August 2025
Antkey archived on Scratchpad
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